alexa Return to theatre for elective hip and knee replacements: what is the relative importance of patient factors, surgeon and hospital?


Journal of Arthritis

Author(s): Bottle A, Aylin P, Loeffler M

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Abstract The aim of this study was to define return to theatre (RTT) rates for elective hip and knee replacement (HR and KR), to describe the predictors and to show the variations in risk-adjusted rates by surgical team and hospital using national English hospital administrative data. We examined information on 260 206 HRs and 315 249 KRs undertaken between April 2007 and March 2012. The 90-day RTT rates were 2.1\% for HR and 1.8\% for KR. Male gender, obesity, diabetes and several other comorbidities were associated with higher odds for both index procedures. For HR, hip resurfacing had half the odds of cement fixation (OR = 0.58, 95\% confidence intervals (CI) 0.47 to 0.71). For KR, unicondylar KR had half the odds of total replacement (OR = 0.49, 95\% CI 0.42 to 0.56), and younger ages had higher odds (OR = 2.23, 95\% CI 1.65 to 3.01) for ages < 40 years compared with ages 60 to 69 years). There were more funnel plot outliers at three standard deviations than would be expected if variation occurred on a random basis. Hierarchical modelling showed that three-quarters of the variation between surgeons for HR and over half the variation between surgeons for KR are not explained by the hospital they operated at or by available patient factors. We conclude that 90-day RTT rate may be a useful quality indicator for orthopaedics. ©2014 The British Editorial Society of Bone & Joint Surgery. This article was published in Bone Joint J and referenced in Journal of Arthritis

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